17855590 divided by 725 
The aim is to understand the frequency of 725 in 17855590.

Moving on to step 1:
When dividing 1 by 725, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 725

On to step 2:
When dividing 17 by 725, we get 0 with a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Take the next digit (8) from the dividend and append it to 17, then repeat: 178 / 725

Moving on to step 3:
The number 725 fits into 178 0 times, leaving a remainder of 178.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 178 leaves us with 178.
Include the next digit (5) from the dividend after 178, then repeat: 1785 / 725

Moving on to step 4:
1785 divided by 725 is 2 with a remainder of 335.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 1450 from 1785, we get 335.
Include the next digit (5) from the dividend after 335, then repeat: 3355 / 725

Step 5:
The number 725 fits into 3355 4 times, leaving a remainder of 455.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
If we take 2900 away from 3355, we end up with 455.
Take the next digit (5) from the dividend and append it to 455, then repeat: 4555 / 725

Moving on to step 6:
The number 725 fits into 4555 6 times, leaving a remainder of 205.
The next digit of our result is 6. 
Result so far: 246.0
Subtract 4350 from 4555 to get 205.
Include the next digit (9) from the dividend after 205, then repeat: 2059 / 725

Step 7:
The number 725 fits into 2059 2 times, leaving a remainder of 609.
The number 2 becomes the next digit in our result. 
Result so far: 2462.0
Subtracting 1450 from 2059 leaves us with 609.
Bring next digit (0) of the dividend behind the 609 and repeat the process: 6090 / 725

Advancing to step 8:
If we divide 6090 by 725, we get 8 and a remainder of 290.
Write down 8 as next digit of the result. 
Result so far: 24628.0
Subtract 5800 from 6090 to get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 9:
The number 725 fits into 2900 4 times, leaving a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 24628.4
Subtract 2900 from 2900 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
725 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 24628.4
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
The number 725 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 24628.4
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 24628.4, and the remainder is 0.0.